Problem 93 of 7
Classify the average rate of change of f(x)=-2x+5 over [1,3] as positive, negative, or zero.
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use graph or table endpoints.
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Function and interval must determine endpoint output comparison.
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Solution
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1. Evaluate the function at both endpoints.
2. Compare the ending output to the starting output.
3. Classify the average rate sign from the net change.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using local increasing/decreasing at one endpoint only.